Effect of Organic and Inorganic Carbon on Extracellular Enzyme Activity of Acid Phosphatase and Proteases in Three Kinds of Fungal Hyphae Study on prolonged effect of humic acid-urea (long-term urea) on maize Effect of humic acid-urea complex on urea transformation and nitrogen release Optimized adsorption of soil Cr (VI) by humic acid Ammonia volatilization characteristics and related affecting factors of humic acid urea Control mechanism of phytophthora blight of chilli pepper by anaerobically digested pig slurry - The roles of ammonium and humic acid in biogas slurry Mobilization of five different synthetic phosphate compounds by organic acids and its activation pathway Effects of different nitrogen fertilizer types and humic acid (HA) on chemical composition, yield and quality of flue-cured tobacco traits in typical ecological zones of Shaanxi province Effect of Illumination and Exogenous Substance on Spore Germination andSeedling Survival of Pteridium aquilinum IMPACT OF ACCELERATED EROSION ON DYNAMICS OF SOIL HUMIC ACIDS Study on relations between Kaschin-Beck disease and content of selenium bounded by humic acids in soil in Northeast China EFFECTS OF COVERING WITH PLASTIC FILM ON DECOMPOSITION OF ORGANIC MATERIALS AND CHARACTERISTICS OF SOIL ORGANIC MATTER Variation of Forest Soil Organic Carbon in Karst Rocky Desertification Area A Review for Effect of Organic Substances on the Availability of Cadmium in Soils Effects of humic acid on transformation of soil As in different pH conditions Effect of Humic Acid on Tubers Secondary Metabolism and Growth Physiological Property of Pinellia pedatisecta under High Temperature Stress Studies on increasing N utilizing efficiency in maize by applying humic acid Effects of different application rates of humic acid compound fertilizer on leave nutrient accumulation and physiological mechanism of grape THE DISTRIBUTION REGULARITY OF SOIL HUMUS CONTENTS IN TYPICAL GRASSLAND SOIL IN XINJIANG Effects of humic acid compound fertilizers on the nitrogen utilization and effects on the following rape Effect of cropland ecological conditions on soil nutrient and humic acid characteristics of gray desert soil Effect and mechanism of humic acid compound fertilizer on the drought- and senility- resistant ability of wheat THE INACTWATION OF BACILLUS THURINGIENSIS PARASPORAL CRYSTALS BY ULTRAVIOLET ANDTHE PROTECTIVE ACTION OF HUMIC ACIDS Cadmium fractions in soils as influenced by application of organic materials SPECTROSCOPIC CHARACTERISTICS OF SOIL ORGANIC MATTER IN DIFFERENT Efect of the application amount of humic acid compound fertilizer 0n the yield and nutrient utilization rate of pepper Effect of corn straw on the fraction variation and properties of humic acid in lousoil during different decaying periods Characteristics of adsorption of NH4+ on humic acid extracted from brown coal Effects of different application rates of humic acid compound fertilizer on pepper and its mechanism of anti-senility and incremental yield Microbial and enzyme activity in response to humic acid in soil with a ginger crop Effect of Illumination and Exogenous Substance on Spore Germination andSeedling Survival of Pteridium aquilinum Effects of seed soaking with humic acid on wheat seedlings antioxidant system under salt-alkali stress. Humus composition of black soil and its organo-mineral complexes under different fertility level N, P and K adsorption and desorption characteristics of humic acids made from the airslake-coal Populus×euramericara cv. ‘74/76’ Nutrient Content and Soil Fertility Affected by Application of Humic Acid with Inorganic Fertilizers EVALUATING THE MOLECULAR WEIGHT AND CHARACTERISTICS OF \=HUMIC ACIDS GRADATIONS USING GEL FILTRATION \=AND RADIOISOTOPE TRACER TECHNIQUE Influence of humic acid fertilizer on biomass accumulation and quality of Angelica sinensis Physiological effects of humic acids on drought resistance of wheat Influence of Biochemical humic Acid on the Physiological and Biochemical Index of Apple Tree Infected with Physalospora piricola Physiological Basis of Improving Soluble Sugar Content in Sweetpotato for Table Use by Humic Acid Application Phosphorus adsorption of iron oxideshumic acid compounds